20402420024039 has 8 divisors (see below), whose sum is σ = 20862854834640. Its totient is φ = 19945806249600.

The previous prime is 20402420024027. The next prime is 20402420024089. The reversal of 20402420024039 is 93042002420402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20402420024039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20402420023996 and 20402420024014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20402420024089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955248242 + ... + 955269599.

It is an arithmetic number, because the mean of its divisors is an integer number (2607856854330).

Almost surely, 2^{20402420024039} is an apocalyptic number.

20402420024039 is a deficient number, since it is larger than the sum of its proper divisors (460434810601).

20402420024039 is a wasteful number, since it uses less digits than its factorization.

20402420024039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910518081.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20402420024039 in words is "twenty trillion, four hundred two billion, four hundred twenty million, twenty-four thousand, thirty-nine".